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See every LONGWELL model whose P-Q curve covers it — margins, noise and power included. No login.

Library: Ø25–1,000 mm, single units up to about 52,000 m³/h — larger duties go straight to an engineer. Prefer to talk it through? Send your specs to an engineer Browse all Bathroom Exhaust Fans models with curves on the Fan Selector →

Buying from LONGWELL

  • Brand owner since 1990
  • Yuyao, Ningbo
  • 12-month standard warranty, extendable to 18–24 months by project agreement
  • Reply within 1 business day

Certificates you can check

Product certificates cover only the models listed on each document — ask which ones apply to your model. ISO certificates cover management systems, not products. Declaration of Conformity for your model and destination on request.

All document scans and what each covers

Test & release at LONGWELL

Specified and drawn by LONGWELL, built to our drawings by qualified partner factories, inspected and released to LONGWELL standards.

  • Wind tunnel · AMCA 210 method
  • Semi-anechoic room · sound power testing
  • Outgoing sampling to AQL 2.5
  • Test records retained for 5 years

How ordering works

  1. Spec check duty point & drawings
  2. Samples 1–3 days (stock models), fee credited to first order
  3. Validation on your bench
  4. Order T/T 30/70 (first order)
  5. Production & release 15–30 days, partner factory
  6. Shipping & after-sales FOB · CIF · DDP
Full terms, QC and FAQ
Current book for Bathroom Exhaust Fans
Bathroom exhaust fans

Bathroom Exhaust Fans

LONGWELL offers high-quality bathroom exhaust fans designed to improve air quality by effectively removing moisture, odors, and pollutants. Our bathroom exhaust fans are engineered for quiet operation and powerful ventilation, helping to prevent mold and mildew buildup in your bathroom. Built with durable materials, these fans ensure long-lasting performance in humid environments.
With sleek designs and easy installation, LONGWELL bathroom exhaust fans seamlessly blend into any bathroom decor while maintaining a healthy and comfortable space. Whether for residential or commercial use, LONGWELL delivers reliable ventilation solutions that keep your bathroom fresh and moisture-free.